# CCSS.Math.Content.4.MD.A.3

Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.

## Scaling Shapes Lesson Plan: PhET Interactive Simulations

Posted by jglassman on

In this lesson plan, students use an interactive simulation to predict the area and perimeter of shapes that have been scaled by factors of 2 or 3. Then they’ll generalize how the area and perimeter o...

## What’s My Area Lesson Plan: PhET Area Builder Simulation

Posted by jglassman on

In this lesson plan, students use an interactive simulation to investigate the mathematical science of area and the different ways to calculate and find area. Area is defined as the amount of space a ...

## Area Builder Lesson Plan: PhET Interactive Simulations

Posted by jglassman on

In this lesson plan, students use an interactive simulation called Area Builder to figure out the area of a rectangle with fractional side lengths. Then they multiply fractional side lengths to discov...

## Metric vs. Customary Units Lesson Plan: Which Should You Use?

Posted by alanaw on

In this metric vs. customary units lesson plan, which is adaptable for grades 3-8, students use BrainPOP resources to explore the differences between metric and customary units of measurement. Student...

## Basic Geometry Lesson Plan: A Tangled Web Puzzle Game

Posted by allisyn on

In this lesson plan adaptable for grades 3 through 8, students use BrainPOP resources (including an interactive game) to learn about basic geometry concepts. Students will explore angles, parallel lin...

## Math Skills Lesson Plan: It’s All Fun and Games

Posted by SM Bruner on

In this math skills lesson plan, which is adaptable for grades 3-12, students work collaboratively to research selected math skills. Students then create, play, and assess a math game that is designed...